Question

Here is a bivariate data set.

x	y
38.3	58.8
38.7	59.5
51.1	39.4
43.8	54
51.2	46.1
45.8	54.9
38.3	55.2
31.7	59.7
35.5	52.3
19.1	70.8
31.9	63.8
50.1	51.7
52.1	48.9

Find the correlation coefficient and report it accurate to three decimal places.
r = _____

Answer 1

	X	Y	X * Y
	38.3	58.8	2252.04	1466.89	3457.44
	38.7	59.5	2302.65	1497.69	3540.25
	51.1	39.4	2013.34	2611.21	1552.36
	43.8	54	2365.2	1918.44	2916
	51.2	46.1	2360.32	2621.44	2125.21
	45.8	54.9	2514.42	2097.64	3014.01
	38.3	55.2	2114.16	1466.89	3047.04
	31.7	59.7	1892.49	1004.89	3564.09
	35.5	52.3	1856.65	1260.25	2735.29
	19.1	70.8	1352.28	364.81	5012.64
	31.9	63.8	2035.22	1017.61	4070.44
	50.1	51.7	2590.17	2510.01	2672.89
	52.1	48.9	2547.69	2714.41	2391.21
Total	527.6	715.1	28196.63	22552.18	40098.87